Machine for grinding valve-seats.



No. 817,435. PATENTED APR. 10, 1906. H. MBYNERS. MACHINE FOR GRINDING VALVE SEATS. APPLICATION FILED JULY 28. 1905.

2 SHEETS-SHEBT 1.

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mllllll gnesse PATENTED APR. 10, 1906 H. MEYNERS. MACHINE FOR GRINDING VALVE SEATS,

APPLIUATION FILED JULY 28. 1905.

2 SHEETS-SHEET 2 N N 0 Q1 w w E! g Him-w E J T Witnesses ATES FATE

Specification of Letters Patent.

Patented April 10, 1906.

Application filed. July 28, 1905. erial No. 271,676-

To all whom it may concern:

Be it known that I, HENRY MEYNERs, a citizen of the United States, residing at Palestine, in the county of Anderson and State of Texas, have invented a new and useful Machine for Grinding Valve-Seats, of which the following is a specification.

This invention relates to apparatus employed for the grinding or finishing of valveseats, and has for its principal object to provide a mechanism of simple construction for grinding or facing flat seats for slide-valves such, for instance, as the main valve of a triple-valve mechanism.

A further object of the invention is to provide a device of this character which may be readily adjusted to accommodate triple-valve casings or other work of different size.

A still further object of the invention is to provide a novel form of grinding or facing machine of that type in which a strip of emery paper or cloth is employed as an abrading element and to provide means for insuring true movement of the strip-carrying block during the grinding operation.

With these and other objects in view, as will more fully hereinafter appear, the invention consists in certain novel features of construction and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes in the form, proportions, size, and. minor details of the structure may be made without departing from the spirit or sacrificing any of the advantages 1 of the invention.

In the accompanying drawings, Figure 1 is an elevation, partly in section, of a grindingmachine constructed in accordance with the invention. Fig. 2 is a detail perspective view of the abrading-bar. Fig. 3 is a similar view of one of the abrading-bar carriers. Figs. 4 and 5 are detail perspective views of different forms of caps or disks arranged to fit triplevalve bodies of different type. Fig. 6 is an elevation of a slightly-modified construction of machine. Fig. 7 is a transverse section of a portion of the machine shown in Fig. 6. Fig. 8 is a plan view, partly in section, of the connecting-rod.

Similar numerals of reference are employed to indicate corresponding parts throughout the several figures of the drawings.

The working parts of the apparatus are supported by a suitable frame 10, at the central portion of which is a vertically-disposed standard 11, having an enlarged head 12 and an annular flange 13, the head 12 being circular and being designed in the present instance to receive the lower open end of that portion of a triple-valve body a which usually contains the emergency-valve and emergency seat and piston of a quick-acting passenger triple-valve of the l/Vestinghouse type, although the construction and the shape of the head may be altered to accommodate work of any type. The present machine, however, is designed more especially for the grinding of slide-valve seats, and in order to accommodate triple-valve bodies of special make two or more disks 14 and 15 of diflerent size are employed, either of said disks being placed on the head 12 and serving to receive the lower portion of the valve-body. This head is so constructed as to fit snugly within the valve-body and permit turning of the latter to any angular position with respect to the standard Without allowing side play during the grinding operation.

The opposite ends of the frame are provided with vertically-disposed sockets 20 for the reception of the lower ends of bars 21, said bars being threaded and. provided with nuts 22, which permit adjustment of the bar and serving also to lock the same in adjusted positions The upper ends of the bars 21 serve as supports for a guide-bar 24, and slidably mounted on the guide-bar are two hangers 25 and 26, which preferably are feathered to the bar in order to prevent independ ent rotative movement. The adjacent face of the lower ends of the hangers are provided. with recesses 27, formed at the ends of openings 28, which extend through the hangers. The openings receive the reduced end portions of a block 30, While the recesses receive fillets or enlargements 31 at the ends of the block. The reduced end portions of the block are threaded for the reception of lockingnuts 32, by means of which the fillets may be drawn within the recessed portions of the hanger and the block firmly locked in place.

The block 30 is preferably of rectangular suitable key or keys 43.

25 is provided with a pair of projecting studs 36, on which are pivoted the arms of a bifurcated link 37, the opposite end of said link being connected to the pin by a crank 39, carried by a shaft 40. This shaft is revolved from any suitable source of power and effects reciprocatory movement of the block 30.

In operation the triple-valve body or other piece of work is first placed on the head 12 and is turned in a horizontal plane until properly adjusted. The block which carries the abrading-strip is then passed through the valve-body, and its opposite heads connected to the hangers 25 and 26. The nuts 22 may then be turned in order to adjust the abrading-strip to proper position, the nuts then serving as a locking means for holding the strip in contact with the work. The shaft 40 is then revolved, and the strip of abrading material is moved back and forth over the work until the valve-seat is properly ground. After the completion of the grinding opera tion the nuts which hold the block 30 in place maybe loosened, and the position of the block is reversed until its opposite faces rest against the ground-surface, the smooth face 0 the block serving to finish the valveseat.

In Figs. 6 and 7 is illustrated a modified construction of machine, this machine being arranged for the reception of valve-bodies of different typesuch, for instance, as the triple bodies of both Westinghouse and New York air-brakes or the main valve-seats of the pumps or other portions of air-brake ap paratus. In this case the base is in the form of a pair of standards 10 and 10, each provided with an opening for the passage of a horizontally-disposed tube or bar 42, which may be rigidly clamped in position by tightening the bolts which unite the sections of said standards. Independent rotative movement of this tube or bar is prevented by a At the opposite ends of the tube 42 are arranged Ts 44, car rying the vertical tubes 41, and the latter may be adjusted and locked in place by the nuts 22, previously described. The upper ends of the tubes 21 carry a tube 24, on which are mounted the abrading-block-carrying arms. In this construction the shaft 40 is supported in a frame separate from the main frame in order that the latter may be adjusted longitudinally with respect to the two supportingstandards, such adjustment being necessary at times in order to accommodate valvebodies or other articles of different size. The standard 10 is provided with a head member which may be of the construction previously described, while the standard 10 carries a horizontally-disposed bar/45, eX- tending transversely of the frame and receiving a slide 46, which may be locked in position by means of suitable screws 47, that bear against wedge-shaped blocks 48, arranged between the slide and the guide-bar 45. The slide 46 is provided with a standard 49, that is provided with a central recess 50 for the passage of the threaded extension of the valve-body (shown in Fig. 6) and is further provided with openings 51 for the passage of securing-bolts which extend also through the rear bolting-flange of the triple-valve body, these bolts being preferably rigidly secured to the standard 49. mits of lateral adjustment of the work with respect to the abrading-block and also permits longitudinal adjustment of the frame in order to accommodate articles of different size.

WVith a device constructed in accordance with this invention it is possible to grind and finish a valve-seat more quickly than the same workcan be accomplished by hand or by the tools usually employed for the purose.

p Having thus described the invention, what is claimed is- 1. The combination with a frame, of a work-support, a guide-bar, hangers depending from said guide-bar at points beyond the opposite sides of said work-support, a block carried by the hangers and provided with clamping members for the reception of an abrading member, and means for effecting reciprocatory movement of the hangers and block.

2. In apparatus of the class described, the combination with a frame, of a guide-bar, a pair of hangers mounted for sliding movement on said guide-bar, and a reversible block supported by the hangers and having on one side a pair of clamping members for the reception of an abradingstrip.

3. In apparatus of the class described, the combination with a frame, of a guide-bar sup ported by the frame, a pair of hangers slid ably mounted on the guide-bar and provided with openings, the adjacent faces of the hangers being recessed at the inner ends of the openings, a block having reduced end portions arranged to extend through said openings and threaded for the reception of the nuts, there being fillets or enlargements at the bases of the reduced end portions, and arranged to enter the recesses of the hangers, and an abrading-stripclamping means supported by the block.

' 4. In apparatus of the class described, the combination with a frame having a pair of vertically disposed sockets, vertical bars passing through said sockets and provided with threaded peripheries, adjusting and locking nuts on the threaded portions of the bars, a guide-bar carried by the upper ends of said vertical bars, hangers slidably mounted on said guide-bar, a block secured to the hangers, a bifurcated link embracing one of the vertical bars, and pivotally connected to one of the hangers, a crank to which the op- This construction per posite end of the link is secured, and an abradin -stripplamping means carried by the bloc i.

5. In an apparatus of the class described, the combination With a pair of standards, of a longitudinally-adjustable base bar or tube carried thereby, means for clamping the bar in position, an upper frame carried by the base-bar, an abradlng block or strip supported by the frame, and Work-carriers supported by said standards.

6. In a device of the class specified, the combination With a pair of spaced standards, of a frame supported thereby and adjustable With respect to the standards, an abrading member guided by the frame, a guide-bar carried by one of the standards and extending transversely of the frame, a slide mounted on said guide-bar, and a work-supporting standard carried by said slide.

In testimony that I claim the foregoing as my own I have hereto afliXed my signature in the presence of two witnesses.

HENRY MEYNERS.

Witnesses:

T. T. SNOW, S. T. I'IOWARD. 

